Article of manufacture



June 5, 192s. 1,672,730

' R. V. PROCTR ARTICLE oF AMANUFAGTUM;

Filed-Feb.' 17:, 1926 2 Sheets--Sheet l @immun INVENTOR Patented June 5, 1928. n 1

UNITED gSTA rss Y "llixrr:NTf1 OFFICE; i

:ROBERT v. rnoc'ron, oF izoUNGsTowN, omo, yfissioiion To THE'coMMERoIAL simiany ING a, STAMPING COMPANY, oF YoUNGsTowN,

OHIO, A CORPORATION OF OHIO.

ARTICLEv oF 'MANUFKACTUREQ ong-mai appnatin ined July 1e, 11924, seriai No'.

The present invention relates broadly'to" sheet metal work, and more particularly toV conveyor pans of the character used incon veyingbulk material such as coal.

It has heretofore been customary in-'the art to which the present invention relates, to make conveyor pans ofl the-'particular type herein contemplated, by punching and cutting Ia sheet of metal, thereafter bending it to shape, and Athen welding the meeting edges, or by welding together a separate pieces. These pans, wh generally satisfactory inl use, have beenrelatively'expensive by reason of the separate welding;

steps required. i f

In accordance with the lpresent -invention the objections referred'to are obviatedand I am enabledv to provide a one piece pan f In the accompanying drawings there is shown for purposes of illustration only a preferred formof my improved article, it being understood that thedrawings do not define the limits of my invention as changes may tion from the spirit of lthe invention or scope' my broader claims. f

In the drawingsv Figure 1 is a perspective view of a com?U pleted pan constructed"y in accordance withk 40 the present invention ;'l

through the pan shown in -Figure 1*;

Figure 3 is a plan `view 0f 'a blank Suit." able for producing apan as be'r'ein disclosed',

Figure 4 is a longitudinal sectional view through a pair of* dies` 'for" formingV the blank, the blank being' shown iin positionionjf the female die; v l Figure 5 is a transverse sectional view through va portion ofthe dies, the section being takeny on the line V`-V of Figure'ft,"

Figures 6 and 7 are views corresponding '7726,315, now Patent 1928. Divided and this application filed February 17,1926.

plurality of i and byl the control ofV the vflow-r of the metal duringthe shaping of the 'blanks be made in the construction and opera-v disclosed therein without departingy Figure 2 'is a transverse sectional Viewy y i `f vthe fmetalfduringthe formationY of the pan KA Serial No. 88,828.v

during vthe forniationof the pan;

Figures 8 and 9 are views corresponding No. 1,663,316, dated March 2o, l

vrespectively to Figures 4 and v5, but illustrating the dies at an intermediate stage respectively? to Figuresl Gand 7, but illus trating still another stage the production f of the-pan, and

Figures 10 and 11 are views Vcorresponding tOxFgu'res 8 and 9 illustratingthe dies4 in theirV final forming position.

dies-utilized in the production of a conveyor pan of the character herein disclosed,

I have found 'that by properly shaping the' l y it is possible to lirstf produce'a series of vertical corrugations'in certain` portions yof the blank, and thereafter `cause these corruga- I tionsr to'r travel endwise and thereby for-mf" These folds represent theiexcess metalfwhich horizontally extending super-imposed folds."

heretofore has been removed by splitting ory ,cutting the blank, thereby* necessitatin'gza welding operation.

In Figure 3 there is illustrated one forni A' of blank ysuitablefor producing the pan illustrated in- `Figures l and '2. In this figure there is illustrated a? `central bottom portion B "adapted vrto forni the bottom B` of `the conveyorpan *and end portions E so adapted to form the end s E" 'of the finished` pan; Alonge'ach edge ofthe blank there f are sideportions s 'andes' adapted to form the vupwardly curved edgesS ,and S respectively Vof the finishedr pan; f The lines lines in Figure 3.

trated las having certain portions thereof on4 which the blankv is: 'folded in'producing the-parts refe'rred'to are indicated by chain it-Wiiil be noted that yune tank is' iii'sadjacentv each ofthe' corners Q "and"A 31 cut away. InFig'ure 3k I' have `show`n arrows 4 ladapted to lindicate' the directi'onof flow'vof whereby these corners are filled out tov produce lthe i completed pan having substantially straight si'de-edg'es. 'On the oppositeffside fmithe metal; to Aflow laterally" as indicated, bythem0WS6-- After'the blank has been cut, itiis' laid` across a female die 7 as shown in Figures 4 `and 5 having a depressed central portion 8 y and upwardly jcurvedfside edges 9 enclosed= Within vertically extending ends l0.b4 This blank is then engaged by male die 11 having its side edgesfo'rmed Wi-th" grooves Qadapt:4 ed to cooperate :vvithf-th'e#upwardlycurvedside edges 9 and With a central portiony 13 adapted to enter the depression '8"'and`form""" the bottom B. of the pan. The .die llvfis; preferably provided 'on keach .end.threof throughout a portion"of"it`s Width'witha should-er -14 adapted ito `engage the. endsEf o'f ,,the pan `andf..prevent .any,tende`ncyp,of.. the metal to. flow upivvardly'V adjacent lthe. sidefedge YS.V l. Themale. die is also 4preferably, l formed with i outl away corners` 11.5l adapted Sto accommodate the \surpl us ,metal. as Will be hereinafter'more fully= apparente. It.. fvvill, :beaunderstood thatrthe Iconveyor pans s producedL by A.the presentninvention are adapted to be .useddn accordance -With the. usual lpractiee,f with 4Athe 4 proj ectingsportions e ofone pan .extending outsidel of theendjA flanges Efzzof: theV panon one. side thereof,

andl YWith -theeside edge .S overlapping`.-fthe f side'ed-g'evSf/of-a panfonftheiother side. In View ,of thisieooperation, it fis .unn'ecessary'to i. have the iedgexS eitherwas'deep or as iWide as f the edge, S, and.l c'omparatively.4 little'- diiculty,iseneounteredin the formationl there;- of 'With al blank; of.properfshape and with.z dies tendinglto prevent;ianyundesirable.flow f of the metal. `Due,A hoWever,to `the.-diinen'fA .sions thronglrthepside edgeS aseomp'ared with, .Ithed'dimensions .throughf fthe" i longitudi-y nalfcenter of. the pan, -aconsiderable :probavl lern.v lis :involved- -inr theu making of this-edge. I halvefpfound that fbestresults can be'faccomr..

engagement with the upwardly curved edge 9 65 of the female die. *ThereafterV the further descent'of the :portionls Willbechecked, While the portion BV of the blank Will"'continu'e' downwardly. Due to the fact that the depth. ofitlie depr'essionfin?"tliei fenale @die above the edg""ef-9 "is considerablyless*Ptlfan that through the central portion, the surplus metalabve`tle"edge 9 adjacent the ends of theblank is `caused to.y form. a plurality 1of verticaly -co'rrugati'ons` 16 As" 'travel oi the diecontinueg'tlie distance between the bottom; fof the V`groove l2: and the top, of the edge Qdi-minishes,thereby tending tolllatt'enA out-the `c,orrngations/li This Iflatteningfout causes the corrugationsffto travelendvvise.of` the fgblank; .into., the space l provided by "ithe' nteheeorreessesf=15- i 'lfheimale l die'.l 1 preferablyflprovided with relativelyyi. sharp T ..corners` 1f?. `rat. theends.

thereoji'Whichrconnerstend to hinterinto4 th-:85

lnetatforniing the]- ends and prevent 'the' Y met-al- .froml liovvingi upwardly past ,thermale die.l i This tendency .j isfu'thier overcome'. `providi-n g.- the die .f with s the .a shoulders 14 A which "overlapilthe end @portions Elof vtheVV blank and cause them to remainvgof..substanl,, tially-.constantwidth.,/ Thervvidthfoftl'ie end portions E ris also suohithattan efec'tivejre Y inforcingbeain is provided of. :sullicient strength to partially ,overcomethisl tendency- A independently of thell'shoulders 1,4. .,Jus't-be-p fore the Aldies come finto'the registration, as i illustrated. fin 4Figure/i8, the end corners buckle 1 inwardly' to. form corrugations andaflemmedate the-temes .metal repli- .1 sented. byA the vertical.corrngations'lf All olfv thseCQr-lrueatiens;meflaitenedfut te form superfimposeol` 4fold'sn19V-during the f...linal1f`V plished. by irstonfining-,the blank-fin such movement ofthldies intotleposition 4shown ma-nnerf'asfto' produce` a plurality of yert-ically. extending .corrngations and thereafter.y actingi upon.V theblankato :first Icause -these inFigurSlOandLll Due ftoithe raction of thestiff' ends, and Avthe Y Y vshoulders ,14, and .-therelatively small space i corrugations to I travel f. endwise. andv decrease ff fprpvidedbyl the'v notches r 15,'h a portionl 'of tli e infsizeandfto theread'ter.fformsuper-imposed.Inetalif-is caused.-tolowfoutwardly"as india.

foldsfwhioh are pressedintopositionfi Fig-,fiuresi4 to.` 11i ofthe .drawingsg-.deal more i para ticularly with the portions of the dies-havingV todowith the for-mation of edge Si Itiwill bej-appairen@howeverf.that if litmis desired; for; Aany reason to 1 increase ithef 4,dimensions ofi y the edge;'S,ftheftwosides of the dies-maybe'. correspondingly :shaped Vand then metal Y onl lthe ends so that in the nishedrpanthe edge,

S is substantially straight asshownfin-iFigi -ure l.

TheV beam i action exertjedffbyjthe tions E during the VforinatiionAofthefpanis sufficient lof itself, combination iWith-the bothl lfedges; ofifthemblank uniformly actedJ-isharp cornersi-onithei male :dieas before`re- UPQDW. AfterA ther l parts havev been: brought, unto if j ferred.. to, to. prevent vthelinetal "from tlovvL cooperative .relation as;illustrated-in-Figures -The-metallbeing thuslcoiiline'd is oaused ft'o" 4 and.5,.the male `die is loweredjcausing ittoi. depress..tl1a central -portionB of :theiblank'j and thereby .produce the Vnps,tandingend-s .E which serve .asf strengthening .beams .during theI `continued. shaping.` lof vthe pan."v The descent 'ofthe male die is ycontinued until the edgegportions ofthe blankgisbrught 'intoizo upper surface on the edge S against which the under side of the edge S of an adjacent an may bear.

-After`the pan has 'been completed, there may be'secured thereto in any desired man-`v means of which the adjacent i ner links by j pans may be secured together and the driving thereof effected.

The present application constitutes `a division of lmy No. 726,315, filed July 16, 1921i, and in which there is now specifically claimed thel method of making the improved article herein disclosed. i f

The advantages of the present invention arise from the formation of a conveyor an from a single piece of metal entirely ree from any welds.

`I claim:

1. As an article of manufacture, ka one pan having a bottom, up-

piece conveyor and `upwardly curved edges standing ends,

extending lengthwise of the .'pan, at least one of said edges having integral., folds at its junction with the upstandiiig ends to accommodate any excess metal.

2. As an article of manufacture, a one piece conveyor pan having a bottom, upstanding ends,

extending lengthwise of the. pan, at least A one of said edges having inwardly extend.

curved `edge extending lengthwise of thecopending application,y Serial and upwardly curved edges pan, said edge being of triple thickness adjacentv each end thereof,v

5. As an article of manufacture, a one piece conveyork pan, standing ends, and curved edge, said edge at leastv one upwardly at its junction with theends having a plurality of folds therein.

j 6. As an article of manufacture, `a conveyor pan having a bottom, upstandi'ng ends, and upwardly curved 'edges extending lengthwise of the pan, at least one of *saidl edgeshaving a reinforcing-corrugation ladjacent its junction with the upstanding ends.

v7. As an article ofvmanufacture, a conveyor pan having a bottom, and upwardly curved edges extending lengthwise of said bottom, atleast one of said edges having reinforcing corrugations kadjacent 'its oppoi site ends. v l 8;-As an article of manufacture, a one having a bottom, up-

piece conveyor pan having a bottom and upstanding ends, at least a of folds'in the metal. f

9. As an article of manufacture, a oneportion of the bot.- tom being connected to saidvends by'means piece conveyor pan having abottom and upf standing ends, at least a portion of the bot- 'tom being connectedtosaid ends by means ofvfolds extending a distance less than the dimension of the panjinl their extension;

y10.',As an article of manufacture, anonthe direction of f veyor pan. havingr Va bottom, 'upstanding ends, and upwardly curved edges extending lengthwise of the pany and of less width than the width ofthe pan, at least one of said edges having a'- reinforcingcorrugation adjacent its junction with` the upstanding, ends, said corrugation having a length substantially equal to the'width ofthe curved edge.

In testimony whereof I yhave hereunto my hand. Y' j ROBERT vv. PRooToa 

